CN102414898A - Fuel cell system - Google Patents

Fuel cell system Download PDF

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Publication number
CN102414898A
CN102414898A CN2010800193273A CN201080019327A CN102414898A CN 102414898 A CN102414898 A CN 102414898A CN 2010800193273 A CN2010800193273 A CN 2010800193273A CN 201080019327 A CN201080019327 A CN 201080019327A CN 102414898 A CN102414898 A CN 102414898A
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CN
China
Prior art keywords
open
valve
fuel cell
stream
unstrpped gas
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Granted
Application number
CN2010800193273A
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Chinese (zh)
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CN102414898B (en
Inventor
田村佳央
楠村浩一
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Publication of CN102414898A publication Critical patent/CN102414898A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
    • C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04664—Failure or abnormal function
    • H01M8/04686—Failure or abnormal function of auxiliary devices, e.g. batteries, capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
    • H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/02—Processes for making hydrogen or synthesis gas
    • C01B2203/0205—Processes for making hydrogen or synthesis gas containing a reforming step
    • C01B2203/0227—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step
    • C01B2203/0233—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step the reforming step being a steam reforming step
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/06—Integration with other chemical processes
    • C01B2203/066—Integration with other chemical processes with fuel cells
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/08—Methods of heating or cooling
    • C01B2203/0805—Methods of heating the process for making hydrogen or synthesis gas
    • C01B2203/0811—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel
    • C01B2203/0822—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel the fuel containing hydrogen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/08—Methods of heating or cooling
    • C01B2203/0805—Methods of heating the process for making hydrogen or synthesis gas
    • C01B2203/0811—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel
    • C01B2203/0827—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel at least part of the fuel being a recycle stream
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/16—Controlling the process
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/16—Controlling the process
    • C01B2203/1695—Adjusting the feed of the combustion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
    • H01M8/0675—Removal of sulfur
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Sustainable Development (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

Disclosed is a fuel cell system provided with: a deodorizer (20) that removes odor components contained in a feed gas; a reformer (32) that generates hydrogen-containing gas by means of a reforming reaction using the feed gas discharged from the deodorizer; a fuel cell (1) that generates electricity using the hydrogen-containing gas discharged from the reformer; on-off valves (21a, 21b, 3a, 3b, 28, 29) that are further downstream than the deodorizer and are provided on combustible gas passages that go through the reformer; and sticking testers (13, 18, 7) that supply the feed gas to the combustible gas passages and thereby test whether or not the on-off valves are stuck.

Description

Fuel cell system
Technical field
The present invention relates to carry out the fuel cell system of the leak test of fuel gas channel.
Background technology
In fuel cell system in the past, propose to have the fuel cell system (for example with reference to patent documentation 1) of the leak test of carrying out the imflammable gas path.
Patent documentation
Patent documentation 1: the open 2008-108446 communique (summary) of Japanese patent application
Summary of the invention
Invent problem to be solved
Yet, in structure in the past, considered gas leakage, but but do not considered unusually about what open and close valve blocked.Particularly fuel cell system is compared with other gas device; Because the water vapor concentration that is contained in the imflammable gas is high, so because dew blocks open and close valve becomes the state that can not open and (close and block: possibility height valve stuck closed).
The present invention is that the result of concentrated research just can check that so that a kind of inspection gas feeding apparatus that is not provided with in addition to be provided the fuel cell system that closing of above-mentioned open and close valve blocked is a purpose in order to solve problem in the past.
Solve the technological means of problem
About above-mentioned problem; The result of the concentrated research of people of the present invention has found; (be absorbed in because deodorizer, be adsorbed from the steam of reformer adverse current; Trap), so in the open and close valve that is provided with on the downstream of the deodorizer of the foul smell composition in removing unstrpped gas and the imflammable gas path, close easily and block via reformer.
In order to solve problem in the past; Fuel cell system of the present invention, thus possess the deodorizer of removing the foul smell composition that is contained in the unstrpped gas, use the unstrpped gas of having passed through said deodorizer and by reforming reaction generate hydrogen-containing gas reformer, use fuel cell that the hydrogen-containing gas of discharging from said reformer generates electricity, the open and close valve that is provided with in the downstream of said deodorizer and via the imflammable gas stream of said reformer, to carry out the detector that blocks that the mode of blocking inspection of said open and close valve constitutes through unstrpped gas being offered said imflammable gas stream.
Above-mentioned purpose of the present invention, other purpose, characteristic and advantage are according to understanding with reference to the following detailed explanation preferred embodiment under the basis of accompanying drawing.
The effect of invention
According to fuel cell system of the present invention, the inspection gas feeding apparatus is not set in addition just can checks blocking of the open and close valve that on the downstream of deodorizer and imflammable gas stream, is provided with via reformer.
Description of drawings
Fig. 1 is the calcspar of an example of the schematic configuration of the related fuel cell system of expression the 1st execution mode of the present invention.
Fig. 2 (a) is the flow chart of an example of the operation program of the related fuel cell system of expression the 1st execution mode of the present invention.
Fig. 2 (b) is the flow chart of an example of operation program of the related fuel cell system of the 1st variation of expression the 1st execution mode of the present invention.
Fig. 2 (c) is the flow chart of an example of operation program of the related fuel cell system of the 2nd variation of expression the 1st execution mode of the present invention.
Fig. 2 (d) is the flow chart of an example of operation program of the related fuel cell system of the 3rd variation of expression the 1st execution mode of the present invention.
Fig. 3 (a) is the flow chart of an example of operation program of the related fuel cell system of the 4th variation of expression the 1st execution mode of the present invention.
Fig. 3 (b) is the flow chart of an example of operation program of the related fuel cell system of the 5th variation of expression the 1st execution mode of the present invention.
Fig. 3 (c) is the flow chart of an example of operation program of the related fuel cell system of the 6th variation of expression the 1st execution mode of the present invention.
Fig. 4 is the calcspar of an example of the schematic configuration of the related fuel cell system of expression the 2nd execution mode of the present invention.
Fig. 5 is the flow chart of an example of the operation program of the related fuel cell system of expression the 2nd execution mode of the present invention.
The explanation of symbol
1 fuel cell
2 fuel gas channel
3a anode inlet valve
3b anode export valve
5 fuel gas supply sources
6a, 6b fuel gas supply valve
7 pressure detectors
8 oxidant gas streams
10 oxidant gas feeders
11 rebreathers
12 frameworks
13 controllers
16a unstrpped gas is supplied with the road
16b unstrpped gas is divided branch road
17a, 17b unstrpped gas main valve
18 unstrpped gas feeders
20 deodorizers
21a, 21b unstrpped gas supply valve
22 water are supplied with the road
23 water pots
24 water pumps
25 clarifiers
26 water supply valves
27 bypass flow path
28 by-pass valves
Valve before 29 pulverizing jets
30 burners
31 air feeders
32 hydrogen makers
The 32a reformer
The 32b evaporator
33 discharging hydrogen streams
100 fuel cell systems
Embodiment
Below, with reference to accompanying drawing on one side to of the present invention preferred embodiment describe on one side.
The fuel cell system of the 1st mode possesses the deodorizer of removing the foul smell composition that is contained in the unstrpped gas; Use has been passed through the unstrpped gas of deodorizer and has been generated the reformer of hydrogen-containing gas by reforming reaction; The fuel cell that the hydrogen-containing gas that use is discharged from reformer generates electricity; The open and close valve that on the downstream of deodorizer and imflammable gas stream, is provided with via said reformer; Thereby with the detector that blocks that constitutes through the mode of blocking inspection that unstrpped gas is offered imflammable gas stream implementation open and close valve.
By this structure, the inspection gas feeding apparatus is not set in addition just can checks that the closing of open and close valve that on the downstream of deodorizer and the imflammable gas stream via said reformer, is provided with block.
So-called " deodorizer " is to have the machine that the adsorbent of the foul smell composition that is contained in the unstrpped gas is removed in absorption, as the foul smell composition, and can illustration hydrogen sulfide, the nitrogen compound of the sulfur compound of thiophene, thioether etc., amine, isonitrile etc.
In " imflammable gas stream ", comprise stream and the mobile stream of hydrogen-containing gas that unstrpped gas flows.
So-called " blocking of open and close valve " is as comprising that the open and close valve situation about blocking of closing that can not open that under closing state, becomes defines.
" block detector ", for example constitute, carry out the judgement of blocking of open and close valve and the action that the necessary machine of inspection is blocked in control by controller.
The fuel cell system of the 2nd mode; In the fuel cell system of the 1st mode; Possess the framework that comprises deodorizer, fuel cell and imflammable gas stream in inside at least, to the rebreather of the internal implementation ventilation of framework, block detector when blocking inspection, to make the rebreather action and the mode of the internal implementation ventilation of framework is constituted.
By this structure; Even imflammable gas is from the external leaks of imflammable gas stream to the imflammable gas stream in blocking inspection; The ventilation action that utilization is undertaken by rebreather, imflammable gas is also diluted and be discharged to the framework outside, so preferred in fail safe.
The fuel cell system of the 3rd mode; In the fuel cell system of the 1st or the 2nd mode; Possess the burner that is connected in imflammable gas stream and heated reformate device, air is offered the combustion fans of burner, block detector and constitute with the mode that when blocking inspection, makes the combustion fans action.
By this structure, even imflammable gas flow into burner from the imflammable gas stream in blocking inspection, by the air that provides from combustion fans, imflammable gas is also diluted and be discharged from, so preferred in fail safe.
The fuel cell system of the 4th mode in the fuel cell system arbitrarily of the 1st～the 3rd mode, possesses to have carried out and carry out the leak test device that the mode of the leak test of imflammable gas stream constitutes after blocking inspection blocking detector.
By this structure because block after inspection can confirm that unstrpped gas can provide with respect to the imflammable gas stream, and move to leak test by above-mentioned, so can detect more reliably leak unusual.
So-called " carrying out the leak test (leak check) of imflammable gas stream " is defined as implementation at least a portion to the practiced leak test content of imflammable gas stream.In addition, in " leak test of imflammable gas stream ", comprise from the gas leakage of imflammable gas stream with from any one in the leakage that is arranged at the valve on the imflammable gas stream.
" leak test device " for example is made up of controller, the judgement of the leakage in implementation imflammable gas path and the action of the necessary machine of control leak test.
The fuel cell system of the 5th mode in the fuel cell system of the 4th mode, possesses and in blocking inspection and at least one of leak test, detects the ftercompction action inhibitor of forbidding under the unusual situation the ftercompction action of reformer.
" ftercompction action inhibitor " for example is made up of controller, even in reformer, to produce the reduction of the pressure that the ftercompction action necessitates, the mode of ftercompction action beginning is constituted.
At this, detecting under the unusual situation by blocking, the ftercompction of possibility can not implement to(for) the imflammable gas path in the downstream of closing the open and close valve that has blocked is higher, still, by this OILS STRUCTURE DEPRESSION carry out useless ftercompction action thereby preferred.In addition, detecting under the unusual situation, if carry out above-mentioned ftercompction action by leak test; Have the possibility that imflammable gas leaks to the outside of imflammable gas stream so, still, by this structure; Suppressed the leakage of imflammable gas, thus preferred in fail safe.
The fuel cell system of the 6th mode in the fuel cell system arbitrarily of the 1st～the 3rd mode, possesses and is detecting the ftercompction action inhibitor of forbidding under the unusual situation the ftercompction of reformer action by blocking.
At this, if detect unusually by blocking, it is higher to implement the possibility of ftercompction for the imflammable gas path in the downstream of closing the open and close valve that has blocked so, still, by this structure, has suppressed to carry out useless ftercompction action thereby preferred.
The fuel cell system of the 7th mode; In the fuel cell system arbitrarily of the 1st～the 6th mode; The imflammable gas stream constitutes with the mode that is connected with atmosphere through open open and close valve, thereby and blocks the mode that detector blocks inspection with implementation after making the imflammable gas stream and atmosphere is connected through open open and close valve and constitute.
By this structure; Atmospheric pressure offers fuel gas channel with unstrpped gas afterwards and inspection is blocked in implementation because in a single day the interior pressure of imflammable gas stream is initialized to; So compare with the situation of blocking inspection by the interior pressure different state implementation in the imflammable gas stream, can suppress to block unusual detection error.
The fuel cell system of the 8th mode; In the fuel cell system of the 7th mode, block detector and be constituted as, closeall open and close valve after making the imflammable gas stream and atmosphere is connected; Afterwards; On one side unstrpped gas is offered the imflammable gas stream open successively open and close valve from the upper reaches on one side, based on before the open open and close valve that is positioned at downstream with afterwards pressure differential, carry out and block inspection.
By this structure, improve Yi Bian make to press successively, Yi Bian inspection gas is provided by the supply of the pressure ratio inspection gas of each closed space of a plurality of open and close valve zonings.Compare with the situation of open a plurality of switchings simultaneously, reduced the possibility that produces the obturation of the stream that causes because of the water that is present in the liquid in each closed space.Therefore, reduced the possibility that the obturation of stream and blocking of open and close valve are confused mutually.
At this, as " open successively ", be meant from the open and close valve of upstream side and open successively to the open and close valve in downstream from the upper reaches, still, might not be meant open successively all open and close valves, in addition, also can open the open and close valve of the adjacency of a part simultaneously.
The fuel cell system of the 9th mode; In the fuel cell system of the 7th mode; Possess as the 1st open and close valve at the upper reaches that are arranged at reformer of open and close valve and the 2nd open and close valve that is arranged at the downstream of reformer, block detector and constitute with mode when making the imflammable gas stream and atmosphere is connected prior to open the 2nd open and close valve of the 1st open and close valve.
By this structure,, also, make in the reformer to atmosphere opening than earlier open the 2nd open and close valve of open the 1st open and close valve even the interior pressure in the reformer is higher than atmospheric state.Therefore, in open the 1st open and close valve, the steam that has reduced in the reformer is supplied with the road adverse current to unstrpped gas, and then the steam generation condensation of adverse current and cause the possibility that stream is inaccessible.Therefore, reduced the possibility that the supply of unstrpped gas when inspection is blocked in implementation is hindered.
The fuel cell system of the 10th mode; In the fuel cell system of the 1st～the 9th mode; Possess the burner that is connected in imflammable gas stream and heated reformate device, arrive the 2nd stream of burner as the 1st stream that arrives burner via reformer and bypass fuel battery of imflammable gas stream, via reformer and fuel cell, block detector to constitute in the mode of blocking inspection that implementation after the inspection is arranged at the open and close valve of the 2nd stream of blocking of having carried out the open and close valve that is arranged at the 1st stream.
The method of operation of the fuel cell system of the 1st mode; Be possess the deodorizer of removing the foul smell composition that is contained in the unstrpped gas, use the unstrpped gas of having passed through deodorizer and by reforming reaction generate hydrogen-containing gas reformer, use fuel cell that the hydrogen-containing gas of discharging from reformer generates electricity and the method for operation of the fuel cell system of the open and close valve that is provided with in the downstream of deodorizer and via the imflammable gas stream of reformer, thereby carry out the inspection of blocking of open and close valve through unstrpped gas being offered the imflammable gas stream.
By this structure, the inspection gas feeding apparatus is not set in addition just can checks that the closing of open and close valve that on the downstream of deodorizer and the imflammable gas stream via reformer, is provided with block.
Below, illustration execution mode of the present invention particularly.
(the 1st execution mode)
Fig. 1 is the calcspar of an example of the schematic configuration of the related fuel cell system of expression the 1st execution mode of the present invention.As shown in Figure 1, the fuel cell system of this execution mode possess comprise use unstrpped gas and steam and by reforming reaction generate the evaporator 32b of the reformer 32a of hydrogen-containing gas and the steam that generation is used for reforming reaction hydrogen maker 32, use fuel cell 1 that the hydrogen-containing gas that provides from hydrogen maker 32 generates electricity, the oxidant gas feeder 10, burning that oxidant gas are offered fuel cell 1 from the hydrogen-containing gas of fuel cell 1 discharge come heated reformate device 32a burner 30, hold the framework 12 of these machines.Also have,, for example can use air-blaster etc. as above-mentioned oxidant gas feeder 10.
In addition, the fuel cell system of this execution mode possesses the air feeder 31 that unstrpped gas feeder 18, Jiang Shui that unstrpped gas is offered reformer 32a offer the water feeder 24 of evaporator 32b, combustion air offered burner 30.At this, as above-mentioned raw materials gas feeder 18, for example can use stepup transformer, as water feeder 24, for example can use water pump, as air feeder 31, for example can use combustion fans.
Have again, thus the fuel cell system of this execution mode possess the unstrpped gas that the unstrpped gas that offers above-mentioned reformer 32a flows supply with road 16a, be used for bypass reformer 32a and with the unstrpped gas that unstrpped gas offers the anodic gas stream 1a of fuel cell 1 is divided branch road 16b, the hydrogen that is used for the hydrogen-containing gas of discharging from hydrogen maker 32 is offered fuel cell 1 is supplied with road 2, offer anodic gas stream 1a that the hydrogen-containing gas of fuel cell 1 flows, cathode gas stream 1c that the oxidant gas that offers fuel cell 1 flows, the hydrogen-containing gas of discharging from fuel cell 1 flow discharging hydrogen stream 33, from hydrogen supply with road 2 carry out branch and to fuel cell implement bypass flow path 27 that bypass is connected with discharging hydrogen stream 33, oxidant gas stream 8 that oxidant gas flows, the water that is used for water is offered evaporator 32b supplies with road 22.
And unstrpped gas is supplied with road 16a and is provided with deodorizer 20, and constitutes with the mode of removing the foul smell composition that is contained in the unstrpped gas (for example the nitrogen compound of the sulfur compound of DMS etc., amine etc. etc.).In addition, unstrpped gas supply road 16a is connected with the unstripped gas body source (for example unstrpped gas infrastructure, unstrpped gas high-pressure cylinder etc.) that the supply with regulation higher than atmospheric pressure is pressed.In addition, water is supplied with road 22 and is provided with and is used to purify the water purification device 25 that offers evaporator 32b and as the water pot 23 of water supply source.
In addition, the fuel cell system of this execution mode possess the unstrpped gas at the upper reaches of deodorizer 20 supply with unstrpped gas main valve 17a, unstrpped gas main valve 17b, the opening that is provided with on the 16a of road and the unstrpped gas of cutting off the downstream of deodorizer 20 supply with unstrpped gas supply valve 21a, the opening of road 16a and cut off to the hydrogen in the downstream of the branching portion of bypass flow path 27 supply with road 2 anode inlet valve 3a, open and cut off bypass flow path 27 interflow portion the upper reaches discharging hydrogen stream 33 anode export valve 3b, open and cut off bypass flow path 27 by-pass valve 28, open and cut off unstrpped gas divide the unstrpped gas supply valve 21b of branch road 16b, open and cut off water supply road 22 water supply valve 26, open and cut off the pulverizing jet of discharging hydrogen stream 33 in downstream of above-mentioned interflow portion before valve 29.Also have, each above-mentioned valve for example is made up of the open and close valve of electromagnetic type.
In addition, the unstrpped gas in the downstream of above-mentioned raw materials gas main valve 17a, 17b is supplied with road 16a and is provided with pressure detector 7.
In addition; The controller 13 of running that possesses the above-mentioned fuel cell system of control, controller 13 is to control valve 29 before anode inlet valve 3a, anode export valve 3b, unstrpped gas main valve 17a, unstrpped gas main valve 17b, unstrpped gas supply valve 21a, unstrpped gas supply valve 21b, by-pass valve 28, the pulverizing jet and air feeder 31 and to constitute according to the mode of blocking inspection that the force value that is detected by pressure detector 7 is carried out above-mentioned each open and close valve that on the downstream of deodorizer 20 and the imflammable gas stream via reformer 32a, is provided with at least.
At this; As " in the downstream of deodorizer and via the imflammable gas stream of reformer ", for example can enumerate by the unstrpped gas till from deodorizer 20 to reformer 32a supply with road 16a, reformer 32a, from reformer 32a to supply with road 2, bypass flow path 27 to the hydrogen till the branching portion of bypass flow path 27, the 1st stream that discharging hydrogen stream 33 till from the interflow portion of bypass flow path 27 to burner 30 constitutes or by the unstrpped gas till from deodorizer 20 to reformer 32a is supplied with road 16a, reformer 32a, hydrogen from reformer 32a to fuel cell till 1 is supplied with road 2, fuel cell 1, discharging hydrogen stream 33 from fuel cell 1 to burner till 30 constitute the 2nd stream etc.
[action]
Then, to describing with a series of actions that inspection is associated of blocking as the characteristic of the fuel cell system of this execution mode.
Fig. 2 (a) is the flow chart of an example that blocks inspection associated action program of the related fuel cell system of expression and the 1st execution mode of the present invention.This action is carried out (below, identical for each flow chart) by controller 13.
At first; If block the sign on (beginning) of inspection by controller 13 outputs; Then close unstrpped gas main valve 17a, unstrpped gas main valve 17b, anode inlet valve 3a, anode export valve 3b, unstrpped gas supply valve 21b; Valve 29, by-pass valve 28, unstrpped gas supply valve 21a before the controller 13 open pulverizing jets, thus make the 1st stream to atmosphere opening (step S501).
Afterwards, close the preceding valve 29 of pulverizing jet, by-pass valve 28, unstrpped gas supply valve 21a (step S502), open unstrpped gas main valve 17a and unstrpped gas main valve 17b (step S503).
Afterwards, open unstrpped gas supply valve 21a and by-pass valve 28 (step S504) offer the 1st stream with unstrpped gas, detect unstrpped gas by pressure detector 7 and supply with the pressure value P 1 in the 16a of road.
If P1 becomes the 1st pressure threshold Pth1 above (Yes in step S505); Be judged as unstrpped gas so and normally be pressed into (injection) to the 1st stream; Close unstrpped gas main valve 17a and unstrpped gas main valve 17b (step S506), thereby unstrpped gas is sealing in the 1st stream at the upper reaches of open and close valve (valve 29 before the pulverizing jet) in the downstream of having closed.At this, the 1st pressure threshold Ph1 is greater than atmospheric pressure, and sets as the value below pressing to the supply of the unstrpped gas of the 1 road warp.In addition, will remain on the storage part (not diagram) (step S507) that is built in controller 13 by pressure detector 7 detected pressure value P 1 at the time point that is judged to be Yes by step S505.
Afterwards, valve 29 (step S508) before the open pulverizing jet, thus make the 1st stream to atmosphere opening.Then; Obtain through the unstrpped gas in (for example after 30 seconds) after the 1st stipulated time by pressure detector 7 and to supply with the pressure value P 2 (step S509) in the 16a of road, thus judge with poor (P1-P2) of pressure value P 1 whether more than the 2nd pressure threshold Pth2 (step S510).Under the situation of pressure differential (P1-P2) (being No in step S510) less than the 2nd pressure threshold Pth2; Unstrpped gas is in the state that is not discharged from through the 1st stream; Any one that is estimated as in the open and close valve (in this execution mode, valve 29, by-pass valve 28 and unstrpped gas supply valve 21a before the pulverizing jet) that is arranged at the 1st stream is in the state that blocks of closing.Therefore, blocking of open and close valve on the 1st stream is unusual as being arranged at, and report is blocked unusual and fuel cell system is implemented to abend (step S511).In addition, controller 13 forbid thereafter to the ftercompction of reformer 32a action (step S512), that finishes the 1st stream blocks inspection (end).At this, the 2nd pressure threshold Pth2 is greater than 0, and presses with value below the atmospheric differential pressure as the supply to the unstrpped gas of the 1st stream till from step S503 to S506 and to set.
Pressure differential (P1-P2) (being Yes in step S510) under the situation more than the 2nd pressure threshold Pth2; Mean that the unstrpped gas that is sealing in the 1st stream by step S503～S506 is discharged to atmosphere, it is all open to be estimated as the open and close valve that is arranged on the 1st stream.Therefore, finish to block inspection (end) as not blocking unusual.
So-called " ftercompction action "; Be to reduce along with temperature and under the situation about reducing in the interior pressure of reformer 32a; Supply with open and close valve and the gas of supplying raw materials on the 16a of road having cut off under the state that is communicated with of reformer 32a and atmosphere the open unstrpped gas that is arranged at, and the action of at least a portion of the interior pressure that compensation has reduced.At this, above-mentioned interior reduction of pressing is detected by the detector that detects the pressure in the reformer 32a directly or indirectly (not diagram).And, if detecting the ftercompction action, reduces by above-mentioned detector for necessary pressure, controller 13 is opened above-mentioned open and close valves and unstrpped gas is offered above-mentioned reformer 32a so.In addition, when ftercompction is moved, even adopt not merely open above-mentioned open and close valve and make the mode of unstrpped gas feeder 18 (stepup transformer) action also passable.Also have; As the detector that directly detects the pressure in the reformer 32a; Illustration pressure detector; As the detector that detects the pressure in the reformer 32a indirectly, illustration detect the temperature of reformer 32a Temperature Detector, measure the timer etc. that hydrogen in stopping reformer 32a generates the elapsed time after the action.
Therefore, if in step S512, forbid ftercompction action,, can not open yet and be arranged at unstrpped gas and supply with open and close valve on the 16a of road to begin supply to the unstrpped gas of reformer 32a even controller 13 pressure that detects reformer 32a reduces so.
In this execution mode; Supply with unstrpped gas main valve 17a, unstrpped gas main valve 17b and the unstrpped gas supply valve 21a of the open and close valve on the 16a of road through open under the state of valve before closing pulverizing jet 29, anode inlet valve 3a, anode export valve 3b as being arranged at unstrpped gas; Thereby unstrpped gas is replenished to reformer 32a, and at least a portion of the pressure that reduced of compensation.
Move as ftercompction; Be not limited to this example; For example, even be employed in close send out before the pulverizing jet 29 and the state of anode export valve 3b under, not merely open unstrpped gas main valve 17a, unstrpped gas main valve 17b and unstrpped gas supply valve 21a as above-mentioned open and close valve; And make anode inlet valve 3a open, and the mode of the ftercompction of the anodic gas stream 1a of implementation fuel cell 1 in reformer 32a ftercompction also can.
At this, the open and close valve that is arranged on the unstrpped gas supply road 16a is made up of unstrpped gas main valve 17a, unstrpped gas main valve 17b and unstrpped gas supply valve 21a, still, is illustration eventually, is not limited thereto.For example, about unstrpped gas main valve 17a, 17b, also can be that any one mode only is set.
With the 1st stream in the step S501 of atmosphere opening, can open each valve simultaneously, still, be preferably at least valve 29 and by-pass valve 28 before the pulverizing jet in open downstream more earlier than open unstrpped gas supply valve 21a.By this structure,, press to atmosphere opening in also can making through the valve in downstream even the interior pressure of reformer 32 is higher than atmospheric state.Therefore; In open unstrpped gas supply valve 21a; Reduced steam and supplied with road 16a adverse current to unstrpped gas, and then the steam generation condensation of this adverse current and inaccessible unstrpped gas is supplied with road 16a, and when inspection is blocked in implementation, hinder the possibility of the supply of unstrpped gas.Particularly unstrpped gas supply valve 21a is the valve that is equipped on the downstream of deodorizer 20, so the control that the adverse current through above-mentioned steam suppresses can estimate that the life-span of deodorizer 20 prolongs.
At this; Be arranged at " the 1st open and close valve " of imflammable gas stream at the upper reaches of reformer 32a; 21a constitutes by the unstrpped gas supply valve, is arranged at " the 2nd open and close valve " of imflammable gas stream in the downstream of reformer 32a, is made up of valve before the pulverizing jet 29 and 28 of by-pass valves; But be illustration eventually, be not limited to this example.For example, in the fuel cell system of valve 29, " the 2nd open and close valve " is made up of 28 of by-pass valves before pulverizing jet not being set.
Have again, in step S501, constitute even, also begin successively the mode that (by the order of valve 29, by-pass valve 28 before the pulverizing jet) open preferably with between valve before pulverizing jet 29 and the by-pass valve 28 from downstream.
In addition; With the 1st stream before the step S501 of atmosphere opening; Also can adopt open unstrpped gas main valve 17a and unstrpped gas main valve 17b; Unstrpped gas for the upper reaches of raw material supplying valve 21a is supplied with road 16a, carries out the mode of the back under pressure (pressure filling) that is caused by unstrpped gas.This is when unstrpped gas supply valve 21a is open, and the unstrpped gas at the upper reaches of unstrpped gas supply valve 21a supplies with road 16a if negative pressure in open unstrpped gas supply valve 21a, has the possibility that attracts the steam in the reformer 32 so.Supply with the negative pressure in the 16a of road because can relax the unstrpped gas at the upper reaches of raw material supplying valve 21a by above-mentioned back under pressure, so can suppress the adverse current of steam.Therefore, can reduce that unstrpped gas is supplied with road 16a and invade the interior possibility of deodorizer 20 because inaccessible or steam takes place in the condensation of the steam of adverse current.
In addition; Above-mentionedly block inspection is arranged at the open and close valve of the 1st stream with inspection the mode of blocking of closing and constitute; But, also can with before blocking unusual judgement (before the step S510) also together the mode blocked of the opening of the last open open and close valve (valve 20 before the pulverizing jet) of inspection constitute.Particularly, also can constitute as mode after step S506 with the pressure value P 1 that will in step S507, remain in storage part through the force value after the stipulated time.Also have, the afore mentioned rules time, block under the unusual situation open, being set to the 1st stream becomes the pressure necessary time equal with atmospheric pressure, for example with setting for 10 seconds.
In addition; Block in the inspection above-mentioned; Thereby the unstripped gas body source to press from the supply with regulation through open unstrpped gas main valve 17a, 17b constitutes the mode that unstrpped gas is pressed into the 1st stream; But, also can adopt the mode that unstrpped gas feeder 18 (stepup transformer) is moved simultaneously and with higher pressure unstrpped gas is pressed into the 1st stream.
In addition, the fuel cell system of this execution mode above-mentioned blocked inspection, preferably carries out in any at least one when the generating of fuel cell system stops and when starting.In addition because above-mentionedly block inspection and unstrpped gas is offered reformer and carry out, so when stopping particularly preferably in generating and when startup any at least one in, carry out under in the temperature of reformer for the temperature that does not produce the carbon in the unstrpped gas and separate out.
[the 1st variation]
The related fuel cell system of the 1st variation of this execution mode then the 1st stream in the 1st execution mode block inspection, carry out the leak test of the 1st stream.
Fig. 2 (b) is the flow chart of an example of operation program of the related fuel cell system of the 1st variation of expression the 1st execution mode of the present invention.
Pressure differential in step S510 (P1-P2) is under the situation more than the Pth2, in the 1st execution mode, finishes to block the inspection action, still, in this variation, then carries out the leak test of the 1st stream.Thus because confirmed open and close valve on the 1st stream do not block unusual and can unstrpped gas be offered the 1st stream after carry out leak test, so can improve the reliability of leak test.Below, with reference to Fig. 2 (b) on one side a series of actions flow process that with leak test be associated described on one side.
Be (being Yes) more than the Pth2 if in step S510, be judged to be pressure differential (P1-P2) in step S510; And move to leak test (beginning) from blocking inspection; Unstrpped gas main valve 17a, unstrpped gas main valve 17b, anode inlet valve 3a, anode export valve 3b and unstrpped gas supply valve 21b have so been closed; At this; Controller 13 so that unstrpped gas supply valve 21a and by-pass valve 28 open and close pulverizing jet before the mode of valve 29 control back (step S601), open unstrpped gas main valve 17a and unstrpped gas main valve 17b (step S602).Thus, for the leak test of the 1st stream after forming the necessary space of being pressed into of unstrpped gas, through carrying out being pressed into of unstrpped gas, thereby suppressed to consume useless unstrpped gas in order to be pressed into.If the order of step S602 and step S601 is turned around if this is; The 1st stream in the downstream of valve 29 gas of also supplying raw materials before after having carried out step S602, comprising pulverizing jet during the steps performed S601 so is so consumed unnecessary unstrpped gas.Then, if become (being Yes) more than the 1st pressure threshold Pth1 in step S603, close unstrpped gas main valve 17a and unstrpped gas main valve 17b (step S604) so by pressure detector 7 detected pressure value P 1.
Thereafter; After having passed through 2nd stipulated time shorter (for example after 6 seconds) than the 1st stipulated time; Whether judgement is more than the 1st pressure threshold Pth1 (step S605) by pressure detector 7 detected pressure value P 1; At P1 is (in step S605, to be Yes) under the situation more than the Pth1, and above-mentioned pressure value P 1 is remained on storage part (not diagram) (step S606).
Thereafter, if through the 1st stipulated time (for example after 30 seconds), then by pressure detector 7 detected pressures, and with this force value as P2 (step S607), whether the difference (P1-P2) of judging P1 and P2 less than the 3rd pressure threshold Pth3 (step S608).Under the situation of pressure differential (P1-P2) (being Yes), finish the leak test action (end) of the 1st stream in step S608 less than the 3rd pressure threshold Pth3.At this, the 2nd pressure threshold Pth2 is greater than 0, and presses with value below the atmospheric pressure reduction as the supply to the unstrpped gas of the 1st stream till from S602 to S604 and to set.
Also have; Pressure value P 1 is under the situation more than the 3rd pressure threshold less than above-mentioned pressure differential under the situation of the 1st pressure threshold Pth1 or in step S608 in above-mentioned steps S605; Be judged as on the 1st stream leakage has taken place; The leakage of reporting the 1st stream abends (step S609, S611) unusually and to fuel cell system, forbids ftercompction action (step S610, S612) thereafter, finishes the leak test (end) of the 1st stream.Under the situation of in the 1st stream, take place leaking,, then have unstrpped gas the possibility of leaking takes place if as the ftercompction action gas of supplying raw materials, not preferred in fail safe.
The 1st stipulated time and the 2nd stipulated time are respectively the stand-by times before steps performed S605 and the step S608.Longer and obvious according to the 2nd stipulated time than the 1st stipulated time; Carry out to detect the 1st leak test of big relatively leakage from step S604 to S605, constitute with the mode of carrying out the 2nd leak test that detects relatively little leakage from step S606 to step S608.
Also have; The leak test of the 1st stream in this variation; The mode of carrying out after the inspection of blocking that is arranged at the open and close valve on the 1st stream with in having carried out the 1st execution mode constitutes; But, also can constitute with the mode of carrying out after the inspection of blocking of the open and close valve that is arranged at the 2nd stream in having carried out described the 4th variation in back.That is, also can be employed in and be through with, carry out the mode of the leak test of above-mentioned imflammable gas stream practiced all the blocking after the inspection of the open and close valve that on the downstream of deodorizer and imflammable gas stream, is provided with via reformer.
[the 2nd variation]
The related fuel cell system of the 2nd variation of this execution mode; The leak test of by-pass valve 28 is carried out in the then leak test of the 1st stream at the upper reaches of the open and close valve (valve before the pulverizing jet) in the downstream in the 1st variation of the 1st execution mode as the leak test of the open and close valve on the 1st stream at the upper reaches of the open and close valve that is arranged at downstream.The leak test of so-called by-pass valve 28, even be meant that planning to close by-pass valve does not cut off stream yet, whether inspection unusual (leakage of by-pass valve 28 is unusual) that the upper reaches of by-pass valve 28 are connected with downstream takes place.
Fig. 2 (c) is the flow chart of an example of operation program of the related fuel cell system of the 2nd variation of expression the 1st execution mode of the present invention.Below, with reference to Fig. 2 (c) one side motion flow to the leak test of by-pass valve 28 describe on one side.
If in step S608, be judged to be pressure differential (P1-P2) less than Pth3 (in step S608, being Yes); Move to the leak test (beginning) of by-pass valve 28, then closed unstrpped gas main valve 17a, unstrpped gas main valve 17b, unstrpped gas supply valve 21b, anode inlet valve 3a, anode export valve 3b.At this, controller 13 is after the mode of valve 29 and unstrpped gas supply valve 21a is controlled before closing by-pass valve 28 and open pulverizing jet (step S701), open unstrpped gas main valve 17a and unstrpped gas main valve 17b (step S702).Thus, for the leak test of by-pass valve 28 after forming the necessary space of being pressed into of unstrpped gas, through carrying out being pressed into of unstrpped gas, thereby suppress to consume useless unstrpped gas in order to be pressed into.If the order of step S702 and step S701 is turned around if this is; So after having carried out step S702 to steps performed S701 during; Also comprise before by-pass valve 28 and the pulverizing jet the 1st stream between the valve 29 and unstrpped gas is pressed into, thereby consumed unnecessary unstrpped gas.
Afterwards, if become (being Yes) more than the 1st pressure threshold Pth1 in step S703, close unstrpped gas main valve 17a and unstrpped gas main valve 17b (step S704) so by pressure detector 7 detected pressure value P 1.
Thereafter; After having passed through 2nd stipulated time shorter (for example after 6 seconds) than the 1st stipulated time; Whether judgement is more than the 1st pressure threshold Pth1 (step S705) by pressure detector 7 detected pressure value P 1; In pressure value P 1 is (in step S705, to be Yes) under the situation more than the Pth1, so pressure value P 1 is remained on storage part (not diagram) (step S706).
Thereafter, after passing through for the 1st stipulated time (for example after 30 seconds), by pressure detector 7 detected pressures value P2 (step S707), whether the difference (P1-P2) of judging P1 and P2 is less than the 3rd pressure threshold Pth3 (step S708).Under the situation of pressure differential (P1-P2) (being Yes), finish the leak test (end) of by-pass valve 28 in step S708 less than the 3rd pressure threshold Pth3.
Also have; Pressure value P 1 is under the situation more than the 3rd pressure threshold less than pressure differential under the situation of the 1st pressure threshold Pth1 or in step S708 in step S705; The leakage that is judged as by-pass valve 28 is unusual; The leakage of controller 13 report by-pass valves 28 abends (step S709, S710) unusually and to fuel cell system, but does not forbid ftercompction action thereafter.In a word, with the unusual ftercompction action of carrying out when common does not take place in fuel cell system identically.This is because before the implementation of this inspection operation, is confirmed on the 1st stream, not leak by the represented leak test of Fig. 2 (b), so also can not leak flammable unstrpped gas from the 1st stream even carry out the ftercompction action.
The 1st stipulated time and the 2nd stipulated time are respectively the stand-by times before steps performed S705 and the step S708.According to the 2nd stipulated time than the 1st stipulated time long and obviously from step S704 to S705; Carry out the 1st leak test that detects big relatively leakage; From step S706 to step S708, constitute with the mode of the 2nd leak test that carry out to detect relatively little leakage.
Also have, the leak test of the by-pass valve 28 in this variation 2 constitutes with the mode of carrying out after the 1st stream leak test in having carried out the 1st variation, still, also can constitute with the mode of carrying out after the inspection of blocking in having carried out the 1st execution mode.
[the 3rd variation]
The related fuel cell system of the 3rd variation of this execution mode is the leak test of the by-pass valve 28 in the 2nd variation of the 1st execution mode then, carries out the leak test of unstrpped gas supply valve 21a as the leak test of the open and close valve on the 1st stream at the upper reaches of the open and close valve that is arranged at downstream.The leak test of so-called unstrpped gas supply valve 21a is even be meant that planning to close unstrpped gas supply valve 21a does not cut off unusual (leakage of unstrpped gas supply valve 21a is unusual) that stream checks that the upper reaches that whether unstrpped gas supply valve 21a takes place are connected with downstream yet.
Fig. 2 (d) is the flow chart of an example of operation program of the related fuel cell system of the 3rd variation of expression the 1st execution mode of the present invention.Below, with reference to Fig. 2 (d) one side motion flow to the leak test of unstrpped gas supply valve 21a describe on one side.
If in step S708, be judged to be pressure differential (P1-P2) less than Pth3 (in step S708, being Yes); Move to the leak test (beginning) of unstrpped gas supply valve 21a, then closed unstrpped gas main valve 17a, unstrpped gas main valve 17b, unstrpped gas supply valve 21b, anode inlet valve 3a, anode export valve 3b.At this, controller 13 opens unstrpped gas main valve 17a and unstrpped gas main valve 17b (step S802) after controlling with the mode of valve 29 before cutting out unstrpped gas supply valve 21a and open by-pass valve 28 and pulverizing jet (step S801).Thus, for the leak test of unstrpped gas supply valve 21a after forming the necessary space of being pressed into of unstrpped gas, thereby suppress to consume useless unstrpped gas in order to be pressed into through carrying out being pressed into of unstrpped gas.
Afterwards, if become (being Yes) more than the 1st pressure threshold Pth1 in step S803, close unstrpped gas main valve 17a and unstrpped gas main valve 17b (step S804) so by pressure detector 7 detected pressure value P 1.
Thereafter; After having passed through 2nd stipulated time shorter (for example after 6 seconds) than the 1st stipulated time; Whether judgement is more than the 1st pressure threshold Pth1 (step S805) by pressure detector 7 detected pressure value P 1; In pressure value P 1 is (in step S805, to be Yes) under the situation more than the Pth1, and above-mentioned pressure value P 1 is remained on storage part (not diagram).Passed through 1st stipulated time after (for example 30 seconds after), judge difference (P1-P2) by pressure detector 7 detected pressure value P 2 and P1 whether less than 3rd pressure threshold Pth3 thereafter.Then, under the situation of pressure differential (P1-P2) (being Yes), finish the leak test of unstrpped gas supply valve 21a in step S808 less than the 3rd pressure threshold Pth3.
Also have; Pressure value P 1 is under the situation more than the 3rd pressure threshold less than pressure differential under the situation of the 1st pressure threshold Pth1 or in step S808 in step 805; The leakage that is judged as unstrpped gas supply valve 21a is unusual, and the leakage of controller 13 report unstrpped gas supply valve 21a abends unusually and to fuel cell system, and finishes the leak test (step S809, step S810) of unstrpped gas supply valve 21a; But, do not forbid ftercompction action thereafter.In a word, with the unusual ftercompction action of carrying out when common does not take place in fuel cell system identically.This is because before the implementation of this inspection operation, is confirmed on the 1st stream, not leak by the represented leak test of Fig. 2 (b), so also can not leak flammable unstrpped gas from the 1st stream even carry out the ftercompction action.
The 1st stipulated time and the 2nd stipulated time are respectively the stand-by times before steps performed S805 and the step S808.According to the 2nd stipulated time than the 1st stipulated time long and obviously from step S804 to S805; Carry out the 1st leak test that detects big relatively leakage;, to step S808, constitute from step S806 with the mode of carrying out the 2nd leak test that detects relatively little leakage.
The leak test of unstrpped gas supply valve 21a in this variation there is no need the leak test of the by-pass valve 28 in the 2nd variation and carries out afterwards, also can follow the leak test of the 1st stream in the 1st execution mode or the leak test of the 1st stream in the 1st variation and carry out afterwards.In addition, after the leak test of unstrpped gas supply valve 21a that also can be in this variation, carry out the leak test of the by-pass valve 28 in the variation 2.
[the 4th variation]
The related fuel cell system of the 4th variation of this execution mode is the inspection of blocking that the open and close valve that is arranged on the 2nd stream is carried out in inspection of blocking that is arranged at open and close valve on the 1st stream in the 1st execution mode then.
Fig. 3 (a) is the flow chart of an example of operation program of the related fuel cell system of the 4th variation of expression the 1st execution mode of the present invention.Below, with reference to Fig. 3 (a) on one side the motion flow that block inspection that be arranged at open and close valve 2nd stream on described on one side.
Be (being Yes) more than the Pth2 if in step S510, be judged to be pressure differential (P1-P2) in step S510; What move to the open and close valve that is arranged on the 2nd stream blocks inspection (beginning), has so closed unstrpped gas main valve 17a, unstrpped gas main valve 17b, by-pass valve 28, unstrpped gas supply valve 21b.At this, controller 13 is controlled to open before unstrpped gas supply valve 21a, anode inlet valve 3a, anode export valve 3b, the pulverizing jet mode of valve 29, and makes the 2nd stream to atmosphere opening (step S901).
Afterwards, close unstrpped gas supply valve 21a, anode inlet valve 3a, anode export valve 3b, the preceding valve 29 (step S902) of pulverizing jet, and open unstrpped gas main valve 17a and unstrpped gas main valve 17b (step S903).
, open unstrpped gas supply valve 21a, anode inlet valve 3a, anode export valve 3b (step S904), and unstrpped gas is offered the 2nd stream, detect unstrpped gases by pressure detector 7 and supply with the pressure value P 1 in the stream 16a thereafter.
If P1 becomes the 1st pressure threshold Pth1 above (in step S905, being Yes); Be judged as unstrpped gas so and normally be pressed into the 2nd stream; Close unstrpped gas main valve 17a and unstrpped gas main valve 17b (step S906), thereby unstrpped gas is sealing in the 2nd stream at the upper reaches of open and close valve (valve 29 before the pulverizing jet) in the downstream of having closed.In addition, will on the time point that is judged as Yes by step S905, remain on the storage part (not diagram) (step S907) that is built in controller 13 by the detected pressure value P 1 of pressure detector.
Afterwards, valve 29 (step S908) before the open pulverizing jet, thus make the 2nd stream to atmosphere opening.Then, obtain through the unstrpped gas in (for example after 30 seconds) after the 1st stipulated time by pressure detector 7 and to supply with the pressure value P 2 in the stream 16a, thus judge with poor (P1-P2) of pressure value P 1 whether more than the 2nd pressure threshold Pth2 (step S910).Pressure differential (P1-P2) (being No in step S910) not under the situation more than the 2nd pressure threshold Pth2; Unstrpped gas is in the state that is not discharged from through the 2nd stream, and any one that is arranged in the open and close valve (in this execution mode before the pulverizing jet valve 29, anode inlet valve 3a, anode export valve 3b and unstrpped gas supply valve 21a) of the 2nd stream is estimated as the state that blocks of closing that is in.Therefore; Blocking of open and close valve on the 2nd stream is unusual as being arranged at; Report is blocked unusual and fuel cell system is implemented to abend (step S911), and controller 13 is forbidden the ftercompction action (step S912) to reformer 32 thereafter, and finish the 2nd stream block inspection (end).
Pressure differential (P1-P2) (being Yes in step S910) under the situation more than the 2nd pressure threshold Pth2; Mean that the unstrpped gas that is sealing in the 2nd stream by step S903～S906 is discharged to atmosphere, it is all open to be estimated as the open and close valve that is arranged on the 2nd stream.Therefore, finish to block inspection (end) as not blocking unusual.
With the 2nd stream in the step S901 of atmosphere opening; Can open each valve simultaneously; But, be preferably at least the action of carrying out valve 29 before the pulverizing jet in downstream that opening is in unstrpped gas supply valve 21a, anode inlet valve 3a and anode export valve 3b than the action of open unstrpped gas supply valve 21a more earlier.By this structure, even the interior pressure of hydrogen maker 32 is higher than atmospheric state, also the valve through downstream is pressed to atmosphere opening in making.Therefore; In open unstrpped gas supply valve 21a; The steam that has reduced in the hydrogen maker 32 is supplied with stream 16a adverse current to unstrpped gas; And then the steam generation condensation of this adverse current and inaccessible unstrpped gas are supplied with stream 16a, the possibility that the supply of unstrpped gas is hindered when inspection is blocked in implementation.Particularly unstrpped gas supply valve 21a is because be the valve that is equipped on the downstream of deodorizer 20, so thereby the control that the adverse current through above-mentioned steam suppresses can estimate that the life-span of deodorizer 20 prolongs.
At this; " the 1st open and close valve " of imflammable gas stream that is arranged at the upper reaches of reformer 32a is made up of unstrpped gas supply valve 21a; " the 2nd open and close valve " of imflammable gas stream that is arranged at the downstream of reformer 32a is made up of valve before the pulverizing jet 29, anode export valve 3b and anode inlet valve 3a; But be an illustration eventually, be not limited to this example.For example, in the fuel cell system of valve 29, " the 2nd open and close valve " is made up of anode export valve 3b and anode inlet valve 3a before pulverizing jet not being set.
Have again, even in step S901, preferably constitute also to begin successively the mode that (by the order of valve 29, anode export valve 3b, anode inlet valve 3a before the pulverizing jet) open between valve before pulverizing jet 29, anode inlet valve 3a and the anode export valve 3b from downstream.
In addition; Fill identical with the pressure in advance of the step S501 of the fuel cell system of execution mode 1; Open unstrpped gas main valve 17a and unstrpped gas main valve 17b in that the 2nd stream also can be adopted before the step S901 of atmosphere opening, supply with the mode of the back under pressure (pressure filling) that stream 16a implementation causes by unstrpped gas with respect to the unstrpped gas at the upper reaches of unstrpped gas supply valve 21a.
Be arranged at blocking inspection and can following after any inspection in the leak test of the leak test of by-pass valve 28 in the leak test of the 1st stream in the 1st variation, the 2nd variation, the raw material supplying valve 21a in the 3rd variation or after the combination of then these inspections and carry out of open and close valve on the 2nd stream in this variation.
[the 5th variation]
The blocking of the 2nd stream that the related fuel cell system of the 5th variation of this execution mode is followed in the 4th variation checked the leak test of carrying out anode inlet valve 3a.Thus because confirmed open and close valve on the 2nd stream do not block unusual and can unstrpped gas be offered the 2nd stream after carry out leak test, so can improve the reliability of leak test.At this, the leak test of so-called anode inlet valve 3a is even be meant that planning to close anode inlet valve 3a does not cut off unusual (leakage of anode inlet valve 3a is unusual) that stream checks that the upper reaches that whether anode inlet valve 3a takes place are connected with downstream yet.
Fig. 3 (b) is the flow chart of an example of operation program of the related fuel cell system of the 5th variation of expression the 1st execution mode of the present invention.Below, on one side with reference to Fig. 3 (b) on one side the motion flow of the leak test of antianode inlet valve 3a describe.
Be (being Yes) more than the Pth2 if in step S910, be judged to be pressure differential (P1-P2) in step S910; Move to the leak test (beginning) of anode inlet valve 3a, then closed unstrpped gas main valve 17a, unstrpped gas main valve 17b, by-pass valve 28 and unstrpped gas supply valve 21b.At this; Controller 13 after controlling (step S1001) with the mode of opening valve 29 before unstrpped gas supply valve 21a, anode export valve 3b and the pulverizing jet and closing anode inlet valve 3a, open unstrpped gas main valve 17a and unstrpped gas main valve 17b (step S1002).Thus, forming for the leak test of anode inlet valve 3a after unstrpped gas is pressed into necessary space, thereby suppressing to consume useless unstrpped gas in order to be pressed into through carrying out being pressed into of unstrpped gas.
Afterwards, if become (being Yes) more than the 1st pressure threshold Pth1 in step S1003, close unstrpped gas main valve 17a and unstrpped gas main valve 17b (step S1004) so by pressure detector 7 detected pressure value P 1.
Thereafter; After having passed through 2nd stipulated time shorter (for example after 6 seconds) than the 1st stipulated time; Whether judgement is more than the 1st pressure threshold Pth1 (step S1005) by pressure detector 7 detected pressure value P 1; In pressure value P 1 is (in step S1005, to be Yes) under the situation more than the Pth1, and pressure value P 1 is remained on storage part (not diagram) (step S1006).Thereafter, after passing through for the 1st stipulated time (for example after 30 seconds), by pressure detector 7 detected pressures value P2 (step S1007), whether the difference (P1-P2) of judging P1 and P2 is less than the 3rd pressure threshold Pth3 (step S1008).Under the situation of pressure differential (P1-P2) (being Yes), finish the leak test (end) of anode inlet valve 3a in step S1008 less than the 3rd pressure threshold Pth3.
Also have; Pressure value P 1 is under the situation more than the 3rd pressure threshold less than pressure differential under the situation of the 1st pressure threshold Pth1 or in step S1008 in step S1005; The leakage that is judged as anode inlet valve 3a is unusual, and the leakage of controller 13 report anode inlet valve 3a is unusual and to fuel cell system abend (step S1009, S1010).Thus, finish the leakage abnormal examination action (end) of anode inlet valve 3a.
The 1st stipulated time and the 2nd stipulated time are respectively the stand-by times before steps performed S1005 and the step S1008.According to long and obvious the 1st leak test that from step S1004 to S1005, carry out to detect big relatively leakage of the 2nd stipulated time, constitute with the mode of carrying out the 2nd leak test that detects relatively little leakage from step S1006 to step S1008 than the 1st stipulated time.
[the 6th variation]
The related fuel cell system of the 6th variation of this execution mode is the leak test of the anode inlet valve 3a in the 5th variation then, carries out the leak test leak test of the 2nd stream (below be referred to as) of the 2nd stream between anode inlet valve 3a and the anode export valve 3b.Fig. 3 (c) is the flow chart of an example of operation program of the related fuel cell system of the 6th variation of expression the 1st execution mode of the present invention.
Pressure differential in step S1008 (P1-P2) is under the situation more than the Pth3, in the 5th variation, finishes the leak test action of anode inlet valve 3a, still, in this variation, continues to carry out the leak test (beginning) of the 2nd gas flow path.Below, on one side with reference to Fig. 3 (c) on one side a series of motion flow that the leak test with the anode path is associated describe.
If judge that in step S1008 pressure differential (P1-P2) for more than the Pth3, moves to the leak test (beginning) in anode path, so closed unstrpped gas main valve 17a, unstrpped gas main valve 17b, by-pass valve 28, unstrpped gas supply valve 21b.At this; Controller 13 is after controlling with the mode of valve 29 before cutting out unstrpped gas supply valve 21a, anode export valve 3b and anode inlet valve 3a and open pulverizing jet (step S1101); Open unstrpped gas supply valve 21b (step S1102), open unstrpped gas main valve 17a and unstrpped gas main valve 17b (step S1103).Thus, forming being pressed into after the space for necessity of unstrpped gas for the leak test of the 2nd stream, thereby suppressing to consume useless unstrpped gas in order to be pressed into through carrying out being pressed into of unstrpped gas.
Afterwards, if become (being Yes) more than the 1st pressure threshold Pth1 in step S1104, close unstrpped gas main valve 17a and unstrpped gas main valve 17b (step S1105) so by pressure detector 7 detected pressure value P 1.
Thereafter; After having passed through 2nd stipulated time shorter (for example after 6 seconds) than the 1st stipulated time; Whether judgement is more than the 1st pressure threshold Pth1 (step S1106) by pressure detector 7 detected pressure value P 1; At P1 is (in step S1106, to be Yes) under the situation more than the Pth1, and pressure value P 1 is remained on storage part (not diagram) (step S1107).
Thereafter, after passing through for the 1st stipulated time (for example after 30 seconds), by pressure detector 7 detected pressures value P2 (step S1108), whether the difference (P1-P2) of judging P1 and P2 is less than the 3rd pressure threshold Pth3 (step S1109).Under the situation of pressure differential (P1-P2) (being Yes), finish the leak test action (end) of the 2nd stream in step S1109 less than the 3rd pressure threshold Pth3.
Also have; Pressure value P 1 is under the situation more than the 3rd pressure threshold less than above-mentioned pressure differential under the situation of the 1st pressure threshold Pth1 or in step S1109 in above-mentioned steps S1107; Leakage has taken place in judgement on the 2nd stream; The leakage of reporting the 2nd stream abends (step S1110, S1112) unusually and to fuel cell system, forbids ftercompction action (step S1111, S1113) thereafter, and finishes the leak test (end) in anode path.Under the situation that in the 2nd stream, takes place to leak,, then have the possibility that leakage takes place unstrpped gas if move and the gas of supplying raw materials as ftercompction, not preferred in fail safe.
The 1st stipulated time and the 2nd stipulated time are respectively the stand-by times before steps performed S1106 and the step S1109.According to long and obvious the 1st leak test that from step S1105 to S1106, carry out to detect big relatively leakage of the 2nd stipulated time, constitute with the mode of carrying out the 2nd leak test that detects relatively little leakage from step S1107 to step S1109 than the 1st stipulated time.
Also have; In the leak test of above-mentioned the 2nd stream; Reformer 32a is carried out bypass (through the stream 16b of unstrpped gas branch) by step S1102～S1105; And the mode that unstrpped gas is pressed into the 2nd stream constituted, still, also can be the mode that unstrpped gas is pressed into the 2nd stream is constituted through reformer 32a.This is for example open unstrpped gas main valve 17a, unstrpped gas main valve 17b and unstrpped gas supply valve 21a and realize under the state of closing anode export valve 3b and unstrpped gas supply valve 3b.
In addition, with respect to the ftercompction of the 2nd stream action, can be reformer 32a be implemented bypass (through the stream 16b of unstrpped gas branch) and the mode that unstrpped gas offers the 2nd stream is constituted.This is for example open unstrpped gas main valve 17a, unstrpped gas main valve 17b and unstrpped gas supply valve 21b and realize under the state of closing anode inlet valve 3a and anode export valve 3b.In addition, also can via reformer 32a the mode that unstrpped gas offers the 2nd stream be constituted with as ftercompction action with respect to the 2nd stream.This is for example open unstrpped gas main valve 17a, unstrpped gas main valve 17b and unstrpped gas supply valve 21a and realize under the state of closing anode export valve 3b and unstrpped gas supply valve 3b.In addition, with respect to the ftercompction action of the 2nd stream, under the situation of the interior pressure that has reduced fuel cell 1, carry out, the internal drop of fuel cell 1 is low to be detected by the detector that detects the pressure in the fuel cell 1 directly or indirectly (not diagram).At this; Can the illustration pressure detector as the detector that directly detects the pressure in the fuel cell 1, as the detector that detects the pressure in the fuel cell 1 indirectly can illustration detect the temperature of fuel cell 1 Temperature Detector, measure the timer in the elapsed time after the generating that stops fuel cell 1 etc.
Therefore; If in step S1111, S1113, forbid ftercompction action, even then controller 13 pressure that detects fuel cell 1 reduces also can not open and is arranged at the open and close valve that unstrpped gas supplies with on road 16a or the 16b and begins unstrpped gas is offered fuel cell 1.
In addition; The leak test of the 2nd stream in this variation constitutes with the mode of carrying out after the leak test of the anode inlet valve 3a in the 5th variation, but also can constitute with the mode of carrying out after the inspection of blocking of the open and close valve that is arranged at the 2nd stream in the 4th variation.In addition, also can constitute with the mode of carrying out the leak test of the anode inlet valve 3a in the 5th variation after the leak test of the 2nd stream in this variation.
[the 7th variation]
About the 1st execution mode with and the fuel cell system of variation; In the inspection according to Fig. 2 (b)～(d) and Fig. 3 (a)～(c) describe; In the 2nd leak test of the relatively little leakage of inspection, detect and leak under the unusual situation, more preferably carry out repeatedly abnormal examination.This is because in that will little leakage to produce the possibility that erroneous judgement breaks in as the leak test of object higher relatively.Therefore, be preferably employing to detect repeatedly the unusual mode of confirming that first mode unusual and that abend constitutes.
(the 2nd execution mode)
Then, the fuel cell system to the 2nd execution mode carries out detailed explanation.
[formation]
Fig. 4 is the calcspar of an example of the schematic configuration of the related fuel cell system of expression the 2nd execution mode of the present invention.The mode that the fuel cell system 200 of this execution mode is adopted is the mode that in the fuel cell system 100 of the 1st execution mode, has eliminated valve 29 before the stream 16b of unstrpped gas branch, unstrpped gas supply valve 21b, anode inlet valve 3a, bypass flow path 27, by-pass valve 28 and the pulverizing jet.Therefore, between fuel cell system 200 and fuel cell system 100 common structural element, thereby identical symbol and the title of mark omitted detailed explanation.
[action]
Then, to describing with a series of actions that inspection is associated of blocking as the characteristic of the fuel cell system of this execution mode.
Fig. 5 is the related flow chart with an example that blocks inspection associated action flow process fuel cell system of expression the 2nd execution mode of the present invention.
At first; The sign on (beginning) of inspection is blocked in slave controller 13 outputs; And close unstrpped gas main valve 17a and unstrpped gas main valve 17b; Open anode export valve 3b of controller 13 and unstrpped gas supply valve 21a, thus the imflammable gas stream in downstream that makes deodorizer 20 is to atmosphere opening (step S1201).
Afterwards, close anode export valve 3b and unstrpped gas supply valve 21a (step S1202), open unstrpped gas main valve 17a and unstrpped gas main valve 17b (step S1203).
Afterwards, open unstrpped gas supply valve 21a (step S1204) and unstrpped gas is offered the imflammable gas stream, detect unstrpped gases by pressure detector 7 and supply with the pressure value P 1 in the stream 16a.
If P1 becomes the 1st pressure threshold Pth1 above (in step S1205, being Yes); Be judged as unstrpped gas so and normally be pressed into the imflammable gas stream; Close unstrpped gas main valve 17a and unstrpped gas main valve 17b (step S1206), thereby unstrpped gas is sealing in the imflammable gas stream at the upper reaches of open and close valve (anode export valve 3b) in the downstream of having closed.To remain on the storage part (not diagram) (step S1207) that is built in controller 13 by pressure detector 7 detected pressure value P 1 at the time point that is judged to be Yes by step S1205.
Afterwards, open anode export valve 3b (step S1208) thus make the imflammable gas stream to atmosphere opening.Then; Obtain through the unstrpped gas in (for example after 30 seconds) after the 1st stipulated time by pressure detector 7 and to supply with the pressure value P 2 (step S1209) in the stream 16a, thus judge with poor (P1-P2) of pressure value P 1 whether more than the 2nd pressure threshold Pth2 (step S1210).Under the situation of pressure differential (P1-P2) (being No in step S1210) less than the 2nd pressure threshold Pth2; Unstrpped gas is in the state that is not discharged from through the imflammable gas stream, and any one that is arranged in the open and close valve (anode outlet valve 3b or unstrpped gas supply valve 21a in this execution mode) of imflammable gas stream is estimated to be the state that blocks of closing that is in.Therefore, blocking of open and close valve on the imflammable gas stream is unusual as being arranged at, and report is blocked unusual and fuel cell system is implemented to abend (step S1211).In addition, controller 13 is forbidden the ftercompction action (step S1212) to hydrogen maker 32 thereafter, and finishes blocking of imflammable gas stream and check action (end).
Above-mentioned pressure differential (P1-P2) (being Yes in step S1210) under the situation more than the 2nd pressure threshold Pth2; Mean that the unstrpped gas that is sealing in the imflammable gas stream by step S1203～S1206 is discharged to atmosphere, it is all open to be estimated as the open and close valve that is arranged on the imflammable gas stream.Therefore, finish to block inspection (end) as not blocking unusual.
Also have, it is also identical with execution mode 1 that the fuel cell system of this execution mode above-mentioned blocked inspection, be preferably when the fuel cell system generating stops and when startup any at least one in carry out.In addition; Above-mentionedly block inspection, carry out so be preferably especially in any at least one when generating stops and when starting under the temperature of reformer condition for the temperature that from unstrpped gas, do not produce carbon and separate out because unstrpped gas is offered reformer and carries out.
[variation]
Even in the 2nd execution mode, the variation identical with the 1st execution mode also is possible.Particularly, after finishing to block the inspection action, can carry out the leak test of imflammable gas stream at the upper reaches of the open and close valve (anode export valve 3b) in downstream, also can carry out the leak test of unstrpped gas supply valve 21a.
[with respect to the variation of the variation of the 1st execution mode, the 2nd execution mode and each mode]
In the fuel cell system of the 1st execution mode, the 2nd execution mode and the variation that is associated with each mode; Be preferably in the inspection of the following stated; Make any at least actions in rebreather 11 and the air feeder 31, any at least inspection in the leak test of blocking inspection, said open and close valve of the open and close valve that this inspection is on the downstream of the deodorizer 20 that describes according to Fig. 2 (a)～(d), Fig. 3 (a)～(c) and Fig. 5 and the imflammable gas stream via reformer, to be provided with and the leak test of imflammable gas stream.
This is because might imflammable gas in above-mentioned inspection be discharged to the outside perhaps burner of gas flow path.If carry out the dilution action, discharge because of the diluted back of imflammable gas so, so fail safe improves by rebreather 11 or air feeder 31.
To those skilled in the art, can understand numerous improvement of the present invention and other execution mode according to above-mentioned explanation.Therefore, above-mentioned explanation should only be to explain as illustration, is purpose so that the teaching of carrying out best mode of the present invention to be provided to those skilled in the art.So long as do not break away from spirit of the present invention, can change the details of its structure and/or function substantively.
Utilize possibility on the industry
Fuel cell system involved in the present invention is useful as fuel cell system that the inspection gas feeding apparatus just can check that closing of the open and close valve that on the downstream of said deodorizer and the imflammable gas stream via reformer, is provided with blocked etc. is not set in addition.

Claims (11)

1. a fuel cell system is characterized in that,
Possess:
Deodorizer is removed the foul smell composition that is contained in the unstrpped gas;
Reformer uses and has passed through the unstrpped gas of said deodorizer and generated hydrogen-containing gas by reforming reaction;
Fuel cell uses the hydrogen-containing gas of discharging from said reformer to generate electricity;
Open and close valve is provided with on the downstream of said deodorizer and the imflammable gas stream via said reformer; And
Block detector, thereby to carry out the mode of blocking inspection of said open and close valve and constitute through said unstrpped gas being offered said imflammable gas stream.
2. fuel cell system as claimed in claim 1 is characterized in that,
Possess:
Framework comprises said deodorizer, said fuel cell and said imflammable gas stream at least in inside; And
Rebreather, to the internal implementation ventilation of said framework,
The said detector that blocks is to constitute in the said mode that makes said rebreather action when checking and the internal implementation of said framework is taken a breath of blocking.
3. like claim 1 or 2 described fuel cell systems, it is characterized in that,
Possess:
Burner is connected in said imflammable gas stream and heats said reformer; And
Combustion fans offers said burner with air,
The said detector that blocks is to make the mode of said combustion fans action constitute said blocking when checking.
4. like any described fuel cell system in the claim 1～3, it is characterized in that,
Possess to have carried out and carry out the leak test device that the mode of the leak test of said imflammable gas stream constitutes after blocking inspection at the said detector that blocks.
5. fuel cell system as claimed in claim 4 is characterized in that,
Possess said blocking in inspection and the said leak test at least one and detect the ftercompction action inhibitor of forbidding under the unusual situation to the ftercompction of said reformer action.
6. like any described fuel cell system in the claim 1～3, it is characterized in that,
Possess said blocking and detect the ftercompction action inhibitor of forbidding under the unusual situation to the ftercompction action of said reformer in the inspection.
7. like any described fuel cell system in the claim 1～6, it is characterized in that,
Said imflammable gas stream constitutes with the mode that is connected with atmosphere through open open and close valve,
Thereby the said detector that blocks constitutes after making said imflammable gas stream and atmosphere is connected, to carry out the said mode of blocking inspection through open said open and close valve.
8. fuel cell system as claimed in claim 7 is characterized in that,
The said detector that blocks is constituted as; After making said imflammable gas stream and atmosphere be connected; Closeall said open and close valve, afterwards, on one side said unstrpped gas is offered the said imflammable gas stream open successively said open and close valve from the upper reaches on one side; Based on before the open open and close valve that is positioned at downstream with afterwards pressure differential, carry out and block inspection.
9. fuel cell system as claimed in claim 7 is characterized in that,
The 2nd open and close valve that possesses the 1st open and close valve at the upper reaches that are arranged at said reformer and be arranged at the downstream of said reformer as said open and close valve,
The said detector that blocks is with when making said imflammable gas stream and atmosphere is connected, and the mode of opening said the 2nd open and close valve prior to said the 1st open and close valve constitutes.
10. like any described fuel cell system in the claim 1～9, it is characterized in that,
Possess:
Burner is connected in said imflammable gas stream and heats said reformer; And
The 1st stream and the 2nd stream as said imflammable gas stream; Said the 1st stream is via said reformer and the said fuel cell of bypass and arrive said burner; Said the 2nd stream is via said reformer and said fuel cell and arrive said burner
The said detector that blocks is carried out the mode of blocking inspection that is arranged at the said open and close valve on said the 2nd stream and is constituted with having carried out the blocking after the inspection of the said open and close valve that is arranged on said the 1st stream.
11. the method for operation of a fuel cell system is characterized in that,
Said fuel cell system possesses:
Deodorizer is removed the foul smell composition that is contained in the unstrpped gas;
Reformer uses and has passed through the unstrpped gas of said deodorizer and generated hydrogen-containing gas by reforming reaction;
Fuel cell uses the hydrogen-containing gas of discharging from said reformer to generate electricity; And
Open and close valve is provided with on the downstream of said deodorizer and the imflammable gas stream via said reformer,
Thereby through said unstrpped gas being offered the inspection of blocking that said imflammable gas stream is carried out said open and close valve.
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